With its 4 x 1,5 meters, this is probably the largest of its kind in Northern Europe. Its location is in South-eastern Norway. Today the rock is lying in the farm fields. At the time the carving was created, around 3000 years ago, this was a coast.
A ship like this was 20 meters long and crewed by 24 warriors. On calm water, it could do 8 knots, 3,5 on the open sea. A crossing from Denmark to Norway could take 18 hours.
At this time, 2000 years before the Vikings, our ancestors had horned helmets. The Vikings had none.